Most chelate polymers which have been prepared in laboratory are insoluble in almost all organic solvents, therefore molecular weight could not be determined, and also degree of polymerisation could not determined.
If the chain structure is linear, and no-branching exists, it may be possible to estimate the molecular weight from rheological measurements. See the article below;
http://onlinelibrary.wiley.com/doi/10.1002/pen.760291006/abstract
Some rheometers have a tool that converts linear viscoelastic response into molecular weight distribution with respect to the method mentioned above.
Since all these polymers are coordination polymers containing metal ions and are I insoluble in almost are organic solvent. Is it possible to find the molecular weight of such types of polymers without dissolve in solvent?
I think by for you all problem solution you will find in this file
file:///C:/Users/user/Downloads/Licentiat_Markus_final.pdf
Dear all,
just as a suggestion, I think the problem of solubility will be solved by the use of ionic liquids, however may be you will face another problem about the constant (the hydrodynamic parameters) to use the equation that relates the intrinsic viscosity to the molecular weight (I am not sure they are available yet). Also, why not trying the end group analysis by chemical or spectroscopic methods to get an idea about the MW.
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